This page is a journal of my journey in the field of Horology, which is timekeeping. In other words, watch collecting. Which in my case is the collecting of chronograph watches.
To contact me, email me at: cmaddox3@sbcglobal.net .

Martin adds to our Valjoux 72 knowledge

I wish I could find the time/material to post more frequently. Hopefully I will and things will pick up.

You asked for further information on the Val. 72 theme and I checked my good old Chronograph 'bible' , the Lang-Meis, Chronographen, Armbanduhren: Die Zeit zum Anhalten (transl. : Chronographs, Wristwatches: The Time to Stop) published by Callwey, 1992, (not continued!) unfortunately only available in german. (One of the authors is Mr. Gerd R. Lang, owner of Chronoswiss, a master-watchmaker, watch-maniac and a chrono specialist .

Searching the model-tableaus I found a remark on the Valjoux 725 : 12-hour counter and flyback device..... But no photo or further description....

Wow, well that makes sense! Thanks for the info/insight!

This is the only information on this movement I ever noticed since collecting chronographs. Neither other books nor the internet brought additional information. Maybe this was a Valjoux project only which was not continued???

That's a possibility... Or it could be some firm incorporated the movement into a product without making a splash about it.

Best regards from Germany

Martin

PS: According to the named book, the Val. 71 has 14''' only. Anyone told me that the Val.71 should have been the predecessor of the Val.72. The corresponding two-subdial version to the Val. 71 is the Val. 22 (also 14''') with its successor Val.23

Good information to know! Thanks Martin! Here is an updated table:

Valjoux 72 Family of Chronograph Movements:

Movement #:

Description:

71

Large 15 Ligne version of Valjoux 72 (13 Ligne or just under)

72

Basic Plain Jane Valjoux 72.

721

"Seafarer" Tides complication in 9 o'clock sub-dial...

722

Rolex variant with Breguet Overcoil & MicroStella Balance

72c/723

Tri-Date non-moonphase v.72

724

GMT complication

725

Fly-back complication, not certain it was ever produced in quantity

726

Improved v.72 movement.

727

Rolex version of 726 with Bruget Overcoil & MicroStella*

728

1 Register/Center Pinion Chrono Minute hand varitant.

729

GMT, probably v.726 with GMT complicaton added.

730

Another Triple-Date model, perhaps DDM v.726?

88

Triple-Date Moonphase model (v.723/72c with Moonphase)

* Note: The posting of Kohei's scan of the GP is something that throws a monkey wrench into my theory of the v.727 being a Rolex Exclusive movement, I think there is more to this movement than I know at this time.